I was originally going to use different colored people for this 4koma, but then realized that the water sprites from Pururun! Shizuku-chan 「ぷるるんっ!しずくちゃん」would be a more fitting choice. For obvious reasons, of course. If you're not familiar with Pururun! Shizuku-chan here is a link to the official website. Also, the following is a list of all the water sprites that appeared in this 4koma:
Hanaji (はなぢ君): Nosebleed Sprite
Aseo (アセオ君): Sweat Sprite
Yodare (ヨダレ君): Drool Sprite
Hanatare (はなたれ君): Snot Sprite
Shizuku (しずくちゃん): Raindrop Sprite
Namida (なみだ君): Tears Sprite
Monsieur-Vino(ヴィーノ氏): Red Wine Sprite